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International Comfort Products NAC224AKA1 Ignition Control Board
The main reason to have an ignition control board is that it checks the main gas intake valve, the igniter and all the flame sensing devices. It is an important safety device that some companies have moved to be a vital part of the main control board instead of having two separate boards.
Simple indications to watch for in a failing chief ignition control board
- Every other device in the system checks out in good health
- Heating and cooling system will not start no matter what
- The electrical signal from the primary thermostat never moves to the main board
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